Parse the creation date out of uploaded audio files

[desrosj]

This is a companion ticket to #35218 which adds parsing for the creation date out of uploaded video files, and will introduce wp_get_media_creation_timestamp().

The same should be done for audio files using the same function.

[blobfolio]

I uploaded a handful of test files to a site and debugged the raw ID3 data. Here is what that turned up:

MP3, FLAC:

None of these had anything like a file creation timestamp, only meta related to the recording like "year".

MPC:

ID3 error: Format not supported, module "module.audio.mpc.php" was removed.

MP4:

This is stored exactly like MP4 video: $metadata['quicktime']['moov']['subatoms']['0']['creation_time_unix']

WMA:

Works just like video "asf": $metadata['asf']['file_properties_object']['creation_date_unix']

[desrosj]

Parse WMA files fir creation date.

[desrosj]

Test WMA file.

[desrosj]

In 42017.patch​ I added the same approach used in wp_read_video_metadata() to wp_read_audio_metadata() (see r41746). Also attached is a test file that should go in the tests/phpunit/data/uploads/ directory.

I talked this over with @blobfolio. The only other file type that may be worth checking is an AAC (Apple audio). I will run some tests on that format when I get a chance.

[desrosj]

Looks like the wp-includes/ID3/module.audio-video-asf.php file has an anonymous function in it, so the tests do not pass on PHP 5.2 (​https://travis-ci.org/desrosj/wordpress-develop/builds/284383012).

[desrosj]

Patch refresh and adding fix for AAC file uploads being blocked.

[desrosj]

Based on my testing, AAC files store the created date in the same location as mp4 and quicktime files.

I did discover that you can't currently upload AAC files, though. This was due to a missing mime type in wp_get_mime_types(). I added a fix for that in 42017.2.patch​. I can create a separate ticket for that issue if necessary.

[desrosj]

Remove AAC fix (see #42919)

[desrosj]

Per the discussion in the most recent media chat, I have separated the AAC file fix in wp_get_mime_types() into a separate patch (#42919). 42017.3.patch​ is a refreshed patch.

[desrosj]

The ticket still applies cleanly and works. Punting to 5.1, though, as this falls outside of the 5.0 focuses.

[desrosj]

42017.diff​ is a slimmed down approach that does not add the WMA location for created timestamp parsing.

This will add support for created_timestamp to MP4 and AAC audio files.

[mikeschroder]

42017.diff​ looks good, and tests pass for me locally.

[desrosj]

In 44528:

Media: Store audio creation date in meta.

In [41746], wp_get_media_creation_timestamp() was introduced to read the created timestamp for videos from getID3 in meta whenever possible. This information is useful separately from the dates on the file itself.

This adds the same support audio files by utilizing wp_get_media_creation_timestamp() in wp_read_audio_metadata().

Props blob folio, desrosj.
Fixes #42017.

[desrosj]

In 44532:

PHPCS: Fix formatting issues.

Fixes formatting issues introduced in [44528].

See #42017.